Sophia: Finding the Determinant of a 2 X 2 Matrix: Lesson 6

After defining intercept, Sal solves a simple equation to identify each intercept and then plots the line on a graph. This video would quite nicely complement an introductory lesson on graphing.

Sal adds a few more steps to these problems as he solves algebraic equations with two steps, though he states that "there's more than one way to do it." Those who become confused by increasingly complicated algebra problems on a test...

Learners investigate matrices by exploring addition, subtraction and multiplication of matrices.  Students find the determinant and inverse of a matrix.  The lesson includes a set of practice problems

Video demonstrating that the area of a parallelogram created by graphing the column vectors of a 2x2 matrix is the equivalent to the absolute value of the determinant of the matrix. Pythagorean theorem, in conjunction with calculating a...

A video lesson that shows how to find the determinant of a 3 x 3 matrix using cofactor expansion. Defines the formula in general terms then shows a concrete example. [10:01]

Solve a matrix in code—color code. Pupils use the interactive resource to set up the matrix equation and its solution path. Scholars use the created solution path to determine the entries of the 2 X 2 solution.

[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the determinant of a 2 x 2 and a 3 x 3 matrix.

[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the inverse of a 2 x 2 matrix. Students can look at guided notes and then attempt practice problems.

This first of twelve algebra 2 resources provides a broad review of many algebra 1 concepts through a number of separable lessons and labs. Starting with the real number system and its subsystems, the sections quickly but thoroughly...

Learners investigate matrices, determinants, and inverses. Topics include the identity matrix and inverse of a matrix. The resource consists of examples with detailed solutions and a quiz.